Ronda Rousey Accuses Justin Bieber of Being 'Rude' to Her Sister

PHOTO: Justin Bieber performs onstage during the Think It Up education initiative, Sept. 11, 2015, in Santa Monica, Calif. Right, Ronda Rousey, UFC Womens Bantamweight Champion is seen, Sept. 16, 2015, in Melbourne, Australia. Getty Images
Justin Bieber performs onstage during the Think It Up education initiative, Sept. 11, 2015, in Santa Monica, Calif. Right, Ronda Rousey, UFC Women's Bantamweight Champion is seen, Sept. 16, 2015, in Melbourne, Australia.

Justin Bieber might want to watch his back.

Champion MMA fighter Ronda Rousey has a bone to pick with the singer, because, she said, he was "really rude" to her sister.

Rousey told Cosmpolitan that she and her 16-year-old sister Julia were at the Cannes Film Festival this year when they spotted Bieber.

“My little sister is really hard to impress and we really didn’t care about anybody that was at the Cannes Film Festival, but I wanted to spend some time with her,” she recounted. “Justin Bieber was over there taking pictures with some ladies and she suddenly got really excited. She was like, ‘Do you think he would wanna take a picture with me?’”

Rousey said she assured her sister that the singer, 21, would be willing. But when she approached him and asked if he would take a photo with Julia, instead of obliging, Bieber allegedly told her, “I’ve already taken a billion pictures today, OK? A billion.”

The fighter added that before she could plead with him any further, he walked away and left her sister on the verge of tears.

“Yeah, I don’t think I’d wanna hang out with him,” said the UFC's undefeated bantamweight champion. “I’m not a Belieber. I was, but not anymore."